Densification in transparent SiO₂ glasses prepared by spark plasma sintering.

ABSTRACT: Recently, spark plasma sintering (SPS) has become an attractive method for the preparation of solid-state ceramics. As SPS is a pressure-assisted low-temperature process, it is important to examine the effects of temperature and pressure on the structural properties of the prepared samples. In the present study, we examined the correlation between the preparation conditions and the physical and structural properties of SiO₂ glasses prepared by SPS. Compared with the conventional SiO₂ glass, the SPS-SiO₂ glasses exhibit a higher density and elastic modulus, but a lower-height first sharp diffraction peak of the X-ray total structure factor. Micro-Raman and micro-IR spectra suggest the formation of heterogeneous regions at the interface between the SiO_2<

SUBMITTER: Masai H 

PROVIDER: S-EPMC9427799 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature